‎(POINCARE Raymond) / VALANCE Georges‎
‎Poincaré‎

‎VU-N°344-17 OCTOBRE 1934-RAYMOND POINCARE 1860-1934‎

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‎Poincare Henri. / Poincare A. Lecons sur les hypotheses cosmogoniques. / Lessons‎

‎Poincare Henri. / Poincare A. Lecons sur les hypotheses cosmogoniques. / Lessons on cosmogonic hypotheses. In French (ask us if in doubt)/Poincare Henri./ Puankare A. Lecons sur les hypotheses cosmogoniques./ Uroki po kosmogonicheskim gipotezam. Cosmogonic Hypotheses. In French. Second Edition. Paris. 1913. 294s. We have thousands of titles and often several copies of each title may be available. Please feel free to contact us for a detailed description of the copies available. SKUalb6c19b6df96d09e6c‎

‎L'oeuvre mathématique de Weierstrass (+) Sur les Propriétes du potentiel et sur les Fonctions Abéliennes [Poincaré] (+) Sur la Théorie des Variations des Latitudes [Poincaré].‎

‎Berlin, Stockholm, Paris, Beijer, 1899. 4to. Bound in contemporary half cloth with gilt lettering to spine. In ""Acta Mathematica"", Vol, 22, 1899. Entire volume offered. Stamps to title page, otherwise a fine and clean copy. pp. 1-18" Pp. 89-178" Pp. 201-358.[Entire volume: (4), 388, 2 pp].‎

‎First printing of these important papers: POINCARÉ: First edition. ""As soon as he came into contact with the work of Riemann and Weierstrass on Abelian Functions and algebraic geometry, Poincaré was very much attracted by those fields. His papers on these subjects occupy in his complete works as much space as those on automorphic functions, their dates ranging from 1881 to 1911. One of his main ideas in these papers is that of ""reduction"" of Abelian functions. Generalizing particular cases studied b Jacobi, Weierstrass, and Picard, Poincaré proved the general ""complete reducibility"" theorem...""(DSB).VOLTERRA: First edition. As the north and south poles, instead of being fixed points on the earth's surface, wander round within a circle of ab. 5o ft. in diameter, the result is a variability of terrestial latitudes generally. Volterra gives an elaborate mathematical analysis of these yearly fluxtuations.‎

‎(Faire-part de mariage du Président de la République, Raymond Poincaré).Monsieur Antoni Poincaré, inspecteur général de Ponts et Chaussées [...] et madame Antoni Poincaré ont l'honneur de vous faire part du mariage de monsieur Raymond Poincaré, avocat à la Cour d'Appel, sénateur de la Meuse, leur fils, avec madame veuve Bazière [...] monsieur & madame Auguste Lannes ont l'honneur de vous faire part du mariage de madame veuve Arthur Bazire, leur soeur et belle-soeur, avec monsieur Raymond Poincaré [...].‎

‎ Paris, le 18 aout 1904, 1 2 cahiers libres. 2 feuillets imprimés ; ‎

‎Mariage du futur Président de la République Raymond Poincaré. ‎

‎Sur l'équilibre d'une masse fluide animée d'un mouvement de rotation. - [POINCARÉ'S PEAR-SHAPE]‎

‎(Stockholm, Beijer), 1885. 4to. As extracted from ""Acta Mathematica, 21. Band]. No backstrip. Fine and clean. Pp. 259-380.‎

‎First printing of Poincaré's famous paper in which he proved that a rotating fluid such as a star changed its shape from a sphere to an ellipsoid to a pear-shape before breaking into two unequal portions. ""This work, which contained the discovery of new, pear-shaped figures of equilibrium, aroused considerable attention because of its important implications for cosmogony in relation to the evolution of binary stars and other celestial bodies."" (The Princeton Companion to Mathematics, P. 786)Another famous paper of Poincaré in celestial mechanics is the one he wrote in 1885 on the shape of a rotating fluid mass submitted only to the forces of gravitation. Maclaurin had found as possible shapes some ellipsoids of revolution to which Jacobi had added other types of ellipsoids with unequal axes, and P. G. Tait and W. Thomson some annular shapes. By a penetrating analysis of the problem, Poincaré showed that still other ""pyriform"" shapes existed. One of the features of his interesting argument is that, apparently for the first time, he was confronted with the problem of minimizing a quadratic form in ""infinitely"" many variables."" (DSB)‎